LMAO. I never used the 2x4 either. Have heard some say a 2x4 for labs 4x4 for chessies but I wouldn't want to know anyone who did either. Another one was to take your Chessie out with your lab and everytime your lab messed up to discipline your chessie. Of course I don't agree with any of the above. Congrats again on the new pup!